package com.webdrider.servlet.action.user;

import java.io.IOException;
import java.util.HashSet;
import java.util.Set;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.common.model.abstracts.AbstractRequest;
import com.common.model.abstracts.AbstractValidator;
import com.common.model.validators.ActionValidator;
import com.common.security.abstracts.AbstractError;
import com.common.security.abstracts.AbstractException;
import com.common.security.errors.ParserError;
import com.common.security.exceptions.ManagerException;
import com.common.security.exceptions.ParserException;
import com.common.servlet.abstracts.AbstractParserServlet;
import com.common.servlet.interfaces.IParser;
import com.webdrider.manager.action.user.UserManager;
import com.webdrider.manager.interfaces.IUserManager;
import com.webdrider.model.action.user.User;
import com.webdrider.model.requests.user.AddUserRequest;
import com.webdrider.model.response.user.AddUserResponse;
import com.webdrider.model.validators.AddUserValidator;
import com.webdrider.model.validators.AdminValidator;
import com.webdrider.model.validators.SessionValidator;
import com.webdrider.model.validators.UsernameUnicityValidator;
import com.webdrider.security.errors.UserError;
import com.webdrider.servlet.util.RequestAction;
import com.webdrider.servlet.util.parser.user.AddUserXMLParser;

public class AddUserServlet extends AbstractParserServlet {
	private static final long serialVersionUID = 1L;
	private static Set<AbstractValidator> validators = new HashSet<AbstractValidator>();

	private AddUserRequest requestContent;
	private AddUserXMLParser parser = new AddUserXMLParser();
	private IUserManager manager = new UserManager();
	
	static {
		validators.add(new ActionValidator(RequestAction.ADD_USER));
		validators.add(new SessionValidator());
		validators.add(new AddUserValidator());
		validators.add(new AdminValidator());
		validators.add(new UsernameUnicityValidator());
	}

	@Override
	public void handle(HttpServletRequest request, HttpServletResponse response) {
		try {
			User user = new User();
			user.setUsername(requestContent.getUsername());
			user.setPassword(requestContent.getPassword());
			user.setUserType(requestContent.getUserType());
			
			manager.save(user);
			
			AddUserResponse addUserResponse = new AddUserResponse();
			addUserResponse.setRequestAction(requestContent.getAction());
			
			response.setContentType("text/xml");
			response.getWriter().write(parser().parseResponse(addUserResponse));
			response.getWriter().close();
		} catch (IOException ioException) {
			error(new ParserError(ParserError.STREAM_ERROR), response);
		} catch (ManagerException managerException) {
			exception(managerException, response);
		} catch (ParserException parserException) {
			exception(parserException, response);
		}
	}

	@Override
	public void setRequest(AbstractRequest abstractRequest) {
		requestContent = (AddUserRequest) abstractRequest;
	}

	@Override
	public Set<AbstractValidator> getValidators() {
		return validators;
	}

	@Override
	public IParser parser() {
		return parser;
	}
	
	@Override
	public void exception(AbstractException exception, HttpServletResponse response) {
		super.exception(exception, response);
		
		switch (exception.getCode()) {
			 case ManagerException.DATABASE_EXCEPTION: {
				 error(new UserError(AbstractError.DATABASE_ERROR), response);
				 break;
			 }
		}
	}
}
